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प्रश्न
Mention where in the human body is the following located and state its main function:
Central canal
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उत्तर
The central canal connects the spinal cord and brain chambers. It contains cerebrospinal fluid, which acts as a shock absorber and facilitates material exchange between neurons.
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संबंधित प्रश्न
Where is this located?
Ganglia
Spinal cord and sympathetic ganglion of autonomous nervous system are connected by ______________.
Give the functions of the spinal cord?
Give Technical Term:
The fluid which fills the central canal of the spinal cord.
The diagram given below shows the internal structure of the spinal cord, depicting a simple reflex. Study the same and then answer the questions that follow:
(i) Name the parts numbered 1 to 5.
(ii) Using the letters of the alphabet shown in the figure indicate the direction in which an impulse enters and leaves the spinal cord.
(iii) What is the term given to the point of contact between two nerve cells?
(iv) What is meant by ‘simple reflex’ ? Give two examples of simple reflexes and name the stimuli too.
(v) How does the arrangement of nerve cells in the spinal cord differ from that in the brain?
The diagram given below represents the spinal cord of a mammal, seen in a transverse section together with the nerves. Study the diagram and then answer the questions given below:
(i) Label the parts 1—8 indicated by guidelines.
(ii) What do the arrows indicate? What is the pathway indicated termed?
(iii) What type of nerve is shown in the diagram?
Identify the odd item from the following series of words.
Spinal nerves are usually ______
Explain the formation of a typical spinal nerve with the help of a neat labelled diagram.
In humans, the number of spinal nerves are ______.
